Electrical junction box

Abstract

An electrical junction box has a main body provided with a circuit board, and a cover externally fitted to the main body. The electrical junction box is assembled in a state in which the main body is accommodated in the cover. The main body includes an opposing surface that opposes an inner surface of the cover. The opposing surface has a water capturing hole that is a recess that opens toward the inner surface of the cover. A first opposing distance between the inner surface of the cover and an upper opening edge of the water capturing hole is larger than a second opposing distance between the inner surface of the cover and a lower opening edge of the water capturing hole.

The invention claimed is: 
     
       1. An electrical junction box comprising:
 a main body provided with a circuit board; and 
 a cover externally fitted to the main body, the electrical junction box being assembled in a state in which the main body is accommodated in the cover, 
 the main body including an opposing surface that opposes an inner surface of the cover, the opposing surface having a water capturing hole that is a first recess that opens toward the inner surface of the cover, and 
 a first opposing distance between the inner surface of the cover and an upper opening edge of the water capturing hole is larger than a second opposing distance between the inner surface of the cover and a lower opening edge of the water capturing hole. 
 
     
     
       2. The electrical junction box according to  claim 1 , wherein
 the water capturing hole includes an opening having an elongated rectangular shape extending in a horizontal direction, and 
 the water capturing hole has a depth dimension greater than or equal to a longitudinal dimension of the opening. 
 
     
     
       3. The electrical junction box according to  claim 1 , wherein
 the opposing surface of the main body that opposes the inner surface of the cover is provided with a water capturing groove arranged to guide water in a horizontal direction using capillary action, the water capturing groove being provided below the water capturing hole. 
 
     
     
       4. The electrical junction box according to  claim 3 , wherein
 the water capturing groove is formed between first and second water stopping protrusions protruding from the opposing surface of the main body toward the inner surface of the cover. 
 
     
     
       5. The electrical junction box according to  claim 4 , wherein
 the first and second water stopping protrusions extend parallel to each other and are spaced from each other vertically. 
 
     
     
       6. The electrical junction box according to  claim 3 , wherein
 the main body further includes an abutment restricting surface arranged to abut an open end surface of the cover, the abutment restricting surface having a drain recess formed therein, at least part of the drain recess being aligned with the water capturing groove in the horizontal direction. 
 
     
     
       7. The electrical junction box according to  claim 1 , wherein
 a water receiving section that is a second recess that opens upward is formed above the water capturing hole of the main body. 
 
     
     
       8. The electrical junction box according to  claim 7 , wherein
 the water capturing hole is formed by first and second sidewall sections between which the upper opening edge and the lower opening edge of the water capturing hole extend, an upper wall section having the upper opening edge, and a lower wall section having the lower opening edge. 
 
     
     
       9. The electrical junction box according to  claim 8 , wherein
 the first and second sidewall sections extend above the water capturing hole such that the water receiving section is formed by the first and second sidewall sections and the upper wall section of the water capturing hole. 
 
     
     
       10. The electrical junction box according to  claim 1 , wherein
 the main body includes a connector accommodating section that opens downward, and 
 the water capturing hole is formed above and adjacent to the connector accommodating section, a lower wall section of the water capturing hole being common with an upper wall section of the connector accommodating section. 
 
     
     
       11. The electrical junction box according to  claim 1 , wherein
 the main body further includes an abutment restricting surface arranged to abut an open end surface of the cover, the abutment restricting surface having a drain recess formed therein. 
 
     
     
       12. The electrical junction box according to  claim 11 , wherein
 the drain recess has a plurality of ribs protruding therefrom.